A Survey on Wi-Fi HaLow Technology for Internet of Things

Wi-Fi HaLow is a wireless networking protocol: IEEE 802.11ah, which was published on May 10th 2017. The technology's low power consumption competes with LoRa, ZigBee, Bluetooth. It uses sub 1 GHz (S1G) license-exempt bands, allowing the creation of large groups of stations or sensors, to provide extended range Wi-Fi networks and support the concept of Internet of Things (IoT). This paper gives an overview of the Wi-Fi HaLow technology, which is able to solve the weakness of Wi-Fi in penetrability and transmission distance up to 1km at the default transmission power of 200mW.